Mouse model of Bell's palsy induced by reactivation of herpes simplex virus type 1.
J Neuropathol Exp Neurol
; 60(6): 621-7, 2001 Jun.
Article
de En
| MEDLINE
| ID: mdl-11398838
ABSTRACT
In order to investigate the mechanism of Bell's palsy, we developed an animal model of facial nerve paralysis induced by the reactivation of herpes simplex virus type 1 (HSV-1). Eight weeks after recovery from facial nerve paralysis caused by inoculation with HSV-1, the mice were treated with auricular skin scratch at the site of the previous inoculation, or with intraperitoneal injection of anti-CD3 monoclonal antibody (mAb), or combination of both procedures. No mice developed facial nerve paralysis when they were treated with either auricular scratch or mAb injection alone. In contrast, 20% of mice developed facial nerve paralysis with the combined treatment. With one exception, no mouse treated with either auricular scratch or mAb injection showed HSV-I DNA in their facial nerve tissue, whereas 4 out of 6 mice receiving both treatments showed HSV-1 DNA on day 10 after treatment. Histopathological findings showed neuronal degeneration in the geniculate ganglion and demyelination of the facial motor nerve in paralyzed mice. These findings suggest that a combination of stimuli, local skin irritation, and general immunosuppression is essential for successfully inducing facial nerve paralysis in mice with latent HSV-1 infection.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Activation virale
/
Simplexvirus
/
Paralysie faciale de Bell
/
Herpès
Type d'étude:
Prognostic_studies
Limites:
Animals
Langue:
En
Journal:
J Neuropathol Exp Neurol
Année:
2001
Type de document:
Article
Pays d'affiliation:
Japon